| Patents for G01F 23 - Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm (31,056) |
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| 05/19/1993 | CN2133826Y Water-measuring relay |
| 05/19/1993 | CN2133825Y Multi-functional liquid level meter |
| 05/18/1993 | US5212444 Detection of damped sine waves in a magnestostrictive displacement transducer using pretrigger and detection thresholds of opposite polarity |
| 05/18/1993 | US5211904 In-vessel water level monitor for boiling water reactors |
| 05/18/1993 | US5211678 Apparatus, method and system for monitoring fluid |
| 05/18/1993 | US5211193 Annular fuel line fitting |
| 05/18/1993 | CA1317785C Digital oil level sensor |
| 05/16/1993 | CA2079519A1 Submersible liquid level measuring system and method of use |
| 05/13/1993 | WO1993009409A1 Fluid volume sensor |
| 05/13/1993 | DE4138528C1 Ultrasonic transducer e.g. for level indicator - has diaphragm held between seals and flange in direct contact with attachment surface or via spacer |
| 05/13/1993 | DE4137075A1 Measurement cell for monitoring body fluid issuing from catheter - is accommodated in pasteur chamber in chamber sepd. by inclined intermediate wall |
| 05/13/1993 | DE4137074A1 Measurement cell for catheter extracted body fluid monitor - interprets pressure of gas compressed in chamber as measure of level of liq. admitted through valve |
| 05/13/1993 | DE4136845A1 Level meter esp. for wells, pipes or boreholes - has measuring probe on end of cable wound around limited width of drum in well mouth |
| 05/12/1993 | EP0541501A1 Method and apparatus for continuous measurement of liquid flow velocity |
| 05/12/1993 | EP0541274A1 Point level detector |
| 05/12/1993 | EP0540569A1 Measurement cell for monitoring body fluids flowing out of a catheter |
| 05/12/1993 | CN2132977Y Radial multi-magnetic pole coupling float liquid level gage |
| 05/12/1993 | CN2132976Y Quick open-close fuel level gage |
| 05/11/1993 | US5210769 Liquid level measuring system |
| 05/11/1993 | US5209115 Liquid detector for thin-walled tanks operating in zero gravity |
| 05/11/1993 | US5209106 Leak detector float system and method therefor |
| 05/05/1993 | CN2132167Y 电子式液位传感控制器 Electronic level sensing controller |
| 05/05/1993 | CN2132166Y Interface variable dilivery device |
| 05/05/1993 | CN2132165Y Universal fuel level indicator |
| 05/05/1993 | CN2132164Y Liquid level gage with bicolor glass tube |
| 05/05/1993 | CN2132163Y Transmitting-reflecting light-self-collecting two colour levelmeter |
| 05/05/1993 | CN2132162Y Device for detecting interface between two liquid phases |
| 05/05/1993 | CN1071753A Periodic sampling compensation method for vibration interference of position measurement |
| 05/05/1993 | CN1071567A Auto-distinguish circuit for liquid level of water storagc of table service drying machine |
| 05/04/1993 | US5207251 Liquid level sensing method and apparatus |
| 05/04/1993 | US5207101 Two-wire ultrasonic transmitter |
| 05/04/1993 | US5207099 Liquid quantity gauging |
| 05/04/1993 | US5207098 Device to measure the level of material within a container |
| 04/29/1993 | DE4135381A1 Level sensor with set of Hall sensors - activates sensors contained in non-magnetic tube using float with mounted magnet |
| 04/28/1993 | CN2131142Y Doorbell alarm for level of high-level water tank |
| 04/28/1993 | CN2131096Y Liquid level display unit |
| 04/28/1993 | CN2131095Y Liquid bulk material level-meter |
| 04/28/1993 | CN2131094Y Bicolour liquid level-meter |
| 04/28/1993 | CN2131093Y Double-screen bicolour liquid level-meter |
| 04/27/1993 | US5205172 Electronic gauge for interface measurements |
| 04/27/1993 | CA1316711C Liquid level control system for refrigeration apparatus |
| 04/22/1993 | DE4227893A1 Differential pressure sensor e.g. for vehicle fuel tank - contains two semiconducting membranes with sensor elements on upper sides in common reference chamber, lower sides exposed to different pressures |
| 04/22/1993 | CA2063661A1 Laser liquid level gauge |
| 04/21/1993 | EP0538182A1 Capacitive level probe and its application |
| 04/21/1993 | EP0538031A2 Method and device for detecting an interface |
| 04/21/1993 | EP0537511A2 Measuring tank |
| 04/21/1993 | CN2130258Y Visible liquid level indicator |
| 04/21/1993 | CN1071251A Universal float-type fluviograph |
| 04/21/1993 | CN1071250A Fluid level sampling device |
| 04/19/1993 | CA2077823A1 Measuring tank |
| 04/15/1993 | WO1993007452A1 Dipstick wiper |
| 04/15/1993 | DE4133542A1 Stationary measurement device for monitoring internal combustion engine fuel consumption - has vertical measurement tube with e.g. differential pressure transducer at lower end |
| 04/13/1993 | US5202667 Electric leakage detector for underground storage tank systems |
| 04/13/1993 | US5201223 Method of sensing fluid flow and level employing a heated extended resistance temperature sensor |
| 04/13/1993 | US5201222 Vessel level sensor mounting structure with positive mechanical lock |
| 04/08/1993 | DE4131086A1 Fluid height determination appts. for nuclear reactor pressure vessel - uses differential pressure measurements, measured by gauge mounted above roof of container |
| 04/07/1993 | EP0536080A2 Method for measuring liquid flow |
| 04/07/1993 | EP0535618A1 Apparatus for separating fluids into their components |
| 04/07/1993 | EP0395701B1 Liquid level sensor |
| 04/07/1993 | CN2129408Y Supersonic-wave linear matrix probe for measuring metal liquid level |
| 04/07/1993 | CN2129407Y Micro-computer tele-detecting water level measuring device |
| 04/06/1993 | US5200894 Method for processing echo sounding data collected from boreholes in the earth |
| 04/06/1993 | US5200615 Method and apparatus for detecting the presence of fluids |
| 04/06/1993 | US5199606 Dispensing and measuring device having an internally extending outlet pipe and level sensor |
| 04/06/1993 | US5199308 Multi-functional level probe mounting device |
| 04/06/1993 | US5199183 Method and apparatus for measuring rise in height of a liquid column |
| 04/03/1993 | CA2052638A1 Dipstick cleaner |
| 04/01/1993 | WO1993006572A1 Proximity detection system and oscillator, and method of using same |
| 04/01/1993 | WO1993006438A1 Liquid metering |
| 04/01/1993 | DE4217669A1 Non-contact level monitor for fluid tank, esp. vehicle fuel tank - has reflective float for light beam from fixed source and with array of photocells to monitor reflected light |
| 04/01/1993 | DE4132061A1 Probe for measuring melt height in concasting mould - attached to tundish by spring-biased bolts to compensate for unexpected vertical movement of tundish |
| 03/31/1993 | EP0534828A1 Level detector in the interior of a recipient containing granular matter, particularly sand |
| 03/31/1993 | EP0534654A2 RF water level measurement |
| 03/31/1993 | EP0533873A1 Ultrasonic detector, detection method for liquid media and ultrasonic transmitter control method. |
| 03/31/1993 | EP0526629A4 Radioactive areal density detector with scintillating receiver |
| 03/31/1993 | CN1070474A Method and apparatus for laser precision detection of liquid level |
| 03/30/1993 | US5198989 Sewer flow measurement control system |
| 03/30/1993 | US5198681 Optical probe shield |
| 03/30/1993 | US5198662 Water temperature distribution measurement system employing optical cable and means for determining a water depth at various points along the optical cable |
| 03/30/1993 | US5197329 PTC water level sensor and control |
| 03/27/1993 | CA2078488A1 Rf water level measurement |
| 03/25/1993 | WO1993006465A1 Sanitary sight indicator |
| 03/25/1993 | DE4231844A1 Measuring level of liquid in housing, esp. of oil in vehicle engine - evaluating voltage across metal resistive element immersed in liquid and in series with current generator |
| 03/25/1993 | DE4131582A1 Capacitive level measurement device for liquids or bulk material - uses measurement-, screening- and base-electrodes with intermediate insulation, and operates as capacitive potential divider |
| 03/25/1993 | DE4130503A1 Level measurement tube, esp. for vehicle ic engine gearbox or crankshaft housing - consists of transparent tube protruding into engine with open lower end, upper end open when inserted, and closed when withdrawn |
| 03/24/1993 | EP0532666A1 Multi-level probe and system for measurement of physical conditions in liquid-containing tanks |
| 03/24/1993 | EP0324731B1 A method of indicating the time of an acoustic pulse and a device for carrying out the method |
| 03/23/1993 | US5196824 Float actuated liquid level monitoring apparatus |
| 03/23/1993 | US5196729 Liquid activated control switch |
| 03/17/1993 | EP0531518A1 A heated liquid sampling probe for an automated sampling apparatus |
| 03/17/1993 | CN2128379Y Reed type liquid level signaler |
| 03/17/1993 | CN2128378Y Capacity sensor for metering foam position in fermentation tank |
| 03/17/1993 | CN2128377Y 液位显示控制仪 Level display controller |
| 03/16/1993 | US5195058 Ultrasonic method for non-intrusive low liquid level sensing |
| 03/16/1993 | US5194747 Liquid level gauge comparing moldulations of incident and reflected loser beams |
| 03/16/1993 | CA1314409C Liquid level sensing device |
| 03/11/1993 | DE4129549A1 Measuring level and density in liquid container or open channels - sucking or forcing liq. into immersed tube and evaluating differential pressure w.r.t. time |
| 03/11/1993 | DE4129401A1 Liq. level measurer esp. for oil in IC engine of motor vehicle - contains two temp. dependent metal film resistance elements mounted on common insulating carrier with gap between elements |
| 03/10/1993 | EP0531067A1 Monitoring film fouling in a process stream |
| 03/10/1993 | CN2128002Y Electronic liquid leel display glass lining container |